Explanation : Many media are available for classroom
communication. These are spoken words,
written words, non-verbal, maps, charts,
ICT based audio-visual technology, etc. So,
assertion (A) is true.
If communication through any medium
fails to take place, the reason can be any
of the following barriers on the part of
the decoder, rather than the attitude of the
encoder:
Physical Barriers.
Perceptual Barriers.
Emotional Barriers ... .
Cultural Barriers ... .
Language Barriers ... .
Gender Barriers ... .
Interpersonal Barriers ....
So, Reason (R) is false.